Improvement in eyeglasses



PAENT OFFICEa SAMUEL D. BURBANK, OF SPRINGFIELD, MASSACHUSETTS.

IMPROVEMENT IN EYEGLASSES.

Specification forming part of Letters Patent No. 162,025, dated April13, 1875; application filed September 8,1874.

To all whom it may conce/rn Be it known that I, SAMUEL D. BURBANK, ofSpringfield, in the county of Hampden and State ot Massachusetts,haveinvented an Improvement in Eyeglasses, ot which the fol lowing is aspeciiieation:

In the accompanying drawings, Fig. l is a front View of an eyeglass withmy improved nose-piece attached. Fig. 2 is a side View ot the nose-piecedetached. Fig. Sis a face View ot" the same.

My invention consists of a tilting nose-piece, upon the face of which isa general protuberance or bearing toward each end, and a generaldepression between such protuberant bear14 ings, as will be more fullyexplained hereafter.

ln the manufacture of my improved eyeglasses,'the frame A and spring Bmay be of the usual construction, as seen in Fig. l. The nose-piece Cmay be pivoted so as to have a vibrating motion, as shown in dottedlilies. The general form of this nose-piece C is like an oX-yoke. It hastwo protuberant bearings, a and a', on opposite sides of the pivot D,and in putting the eyeglass upon the nose the piece C will tilt, so thatboththese bearings will touch the nose, and thus always give a broadbearing-surface, which holds the eyeglass in place,.whatever may be theform of the nose. This yoke-shaped nose-piece may be riveted orotherwise fastened upon the frame, or the spring, or secured in place byany suitable means; but I prefer to use a pivot, which affords easyVibration ot' the nose piece.

I regard the above-described nose-piece as very pleasing in form yet ldo not confine my invention to the preoise form described, so long asthe two opposing bearings a and a are used with the coneavity betweenthem, in order to secure a broad bearing, or two somewhat separate anddistant bearings, as above mentioned.

Having described my invention, I claim- 1. The above-described separatebearings a and a', with the depression between them, substantially asand for the purposes set forth.

2. The above-described yoke-formed nose piece G, substantially assetforth.

SAMUEL D. BURBANK.

Witnesses GIDEoN WELLS, N. A. LEONARD.

